Rheumors Volume 3, Number 2 Spring 1992 POINTS ON JOINTS EXTRA-ARTICULAR FEATURES OF RHEUMATIC DISEASES OR "WHY ARE MANY RHEUMATIC DISEASES SYSTEMIC?" by Robert L. Rosenberg, M.D. We all tend to think of arthritis and rheumatic diseases as affecting only our joints. While this is mostly true for osteoarthritis, many other types of arthritis pose the risk of multiple o